Merge pull request #10 from mitsuruog/master

[監訳希望] Operators
translate media.md to ja
translate font-face.md to ja
Merge pull request #12 from yukihr/master

media.md と font-face.md の日本語訳
Merge pull request #11 from mitsuruog/master

[監訳希望] Keyframes Extend url()
Update README.md

翻訳コンテンツ、翻訳参加者をWikiに移行
Merge pull request #13 from mitsuruog/master

literal翻訳済み
Merge pull request #14 from mitsuruog/Escaping

translate Escaping
Merge pull request #15 from mitsuruog/CSSStyle

[監訳希望]CSS Style
Merge pull request #16 from mitsuruog/master

Introspection
Merge pull request #17 from mitsuruog/master

[監訳済] Variables Interpolation Operators
Merge pull request #18 from mitsuruog/master

[監訳済] Keyframes Extend url()
translate Comments
Merge pull request #19 from japboy/Comments

[監訳希望] Comments
translate js